TM 9-2330-390-14&P
4-72.
FRONT DOLLY AIR LINES REPLACEMENT.
This Task Covers:
a.
Intervehicular Air Hose Replacement
f.
Airbrake Valve-to-Air Reservoit Tube Assembly
b.
Relay Emergency Valve-to-Airbrake Chamber
Replacement
Hose Assembly Replacement
g.
Relay Emergency Valve-to-Right Side Tee Tube
c.
Pressure Protection Valve-to-Relay Emergency
Assembly Replacement
Valve Tube Assembly Replacement
h.
Booster Relay Valve-to-Right Side Tee Tube
d.
Airbrake Valve-to-Relay Emergency Valve Tube
Assembly Replacement
Assembly Replacement
e.
Airbrake Valve-to-Left Side Tee Tube Assembly
Replacement
Initial Setup:
Equipment Conditions:
l Wheels chocked.
l Air reservoir drained (see paragraph 3-6).
Tools/Test Equipment:
Materials/Parts:
l Marker tags (Item 28, Appendix F)
l Antiseize tape (Item 29, Appendix F)
l One locknut
l General mechanic’s tool kit (Item 30, Appendix G)
l Adjustable wrench (Item 37, Appendix G)
NOTE
l All air lines should be tagged before removal. Refer to paragraph 4-16 for tagging
instructions.
l Before connection, male threads of fittings should be coated with antiseize tape if
not already factory-coated with an antiseize compound.
a.
INTERVEHICULAR AIR HOSE REPLACEMENT
NOTE
Left side (emergency) and right side (service) intervehicular air hoses are replaced the
same way except as noted.
1.
Disconnect hose assembly (3 or 4) from anchor coupling (8).
2.
Disconnect hose assembly (4) from elbow (1) at booster relay valve (2). Remove hose assembly.
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